diff --git a/Gemfile b/Gemfile
index 358a09f..f7d989b 100644
--- a/Gemfile
+++ b/Gemfile
@@ -8,7 +8,4 @@ if ENV['PAGEFLOW_DEPENDENCIES'] == 'experimental'
     gem 'pageflow'
     gem 'pageflow-support'
   end
-else
-  # Give a hint to Bundler to prevent endless loop
-  gem 'rails', '~> 5.2.0'
 end
diff --git a/Gemfile.ci b/Gemfile.ci
deleted file mode 100644
index b62b039..0000000
--- a/Gemfile.ci
+++ /dev/null
@@ -1,8 +0,0 @@
-source 'https://rubygems.org'
-
-gemspec
-
-gem 'pageflow-theme-doc-publisher', git: 'https://github.com/tf/pageflow-theme-doc-publisher'
-
-# Give a hint to Bundler to prevent endless loop
-gem 'rails', '~> 5.2.0'
diff --git a/pageflow-external-links.gemspec b/pageflow-external-links.gemspec
index 6cc3978..84a9c01 100644
--- a/pageflow-external-links.gemspec
+++ b/pageflow-external-links.gemspec
@@ -18,18 +18,13 @@ Gem::Specification.new do |spec|
 
   spec.required_ruby_version = '>= 2.1'
 
-  spec.add_runtime_dependency 'pageflow', ['>= 15.7', '< 17']
+  spec.add_runtime_dependency 'pageflow', ['>= 15.7', '< 18']
   spec.add_runtime_dependency 'pageflow-public-i18n', '~> 1.0'
 
   spec.add_development_dependency 'bundler', ['>= 1.0', '< 3']
-  spec.add_development_dependency 'pageflow-support', ['>= 15.0', '< 17']
+  spec.add_development_dependency 'pageflow-support', ['>= 15.0', '< 18']
   spec.add_development_dependency 'rake', '~> 12.0'
-
-  if ENV['PAGEFLOW_DEPENDENCIES'] == 'experimental'
-    spec.add_development_dependency 'rspec-rails', '~> 6.0'
-  else
-    spec.add_development_dependency 'rspec-rails', '~> 3.0'
-  end
+  spec.add_development_dependency 'rspec-rails', '~> 6.0'
 
   # Semantic versioning rake tasks
   spec.add_development_dependency 'semmy', '~> 1.0'